Double-acting submerged pump



(No Model.)

0. H. FOSTER. DOUBLE ACTING SUBMERGED PUMP.

PatentedMaJr. 17,1885.

wi/bwe/aoe/ag ports, a.

valves B B, respectively, which consist, as

' UNITED STATES PATENT OFFICE.

CHARLES HENRY FOSTER, OF ALAMEDA, CALIFORNIA.

DOUBLE-ACTING SUBMERGED PUMP.

SPECIFICATION forming part of Letters Patent No. 314,117, dated March17, 1885.

' Application filed August 29, 1884. (No model.)

To all whom it may concern:

Be it known that I, CHARLES HENRY Fos- TER, of Alameda, county ofAlameda, and State of California, have invented an Improvement inDouble-Acting Submerged Pumps; and I hereby declare the following to bea full, clear, and exact description thereof.

My invention relates to a new and useful double-acting submerged pumpfor deep wells, and more especially for Artesian or bored wells, inwhich the diametrical space is limited.

My invention consists in a novel hollow double-valved plunger and hollowpiston as applied to a cylinder having valves at each end.

The object of my invention is to provide a double-acting pump havingsmall area in cross-section, whereby it is adapted for Artesian andbored wells, or for any wells in which the space is limited, and byreason of its double action has an increased capacity in a given time.

Beferringto the accompanying drawings, Figure 1 is a vertical section ofmy pump. Fig. 2 is a plan view of the bottom of the cylinder. Fig. 3 isa plan of the valve-ring B. Fig. 4 is a plan of the bottom of the hollowplunger. r

A is the cylinder which is to be submerged in the well. At its lower endit is provided with ports a, arranged in the manner shown in Fig. 2. Atits upper end it has similar These ports are controlled by the shown inFig. 3, of annular bands or rings of metal and leather packing rivetedtogether, Fig. 1. These valves slide on spindles or bolts 1), and areactuated by means of springs c.

D is the hollow plunger fitted within the cylinder A. The bottom of theplunger is provided with ports d, as shown in Fig. 4, controlled by theannular band or valve E. The top of the plunger is provided with ports(1, controlled by valve E. These valves are guided by spindles or boltsF, around which are springs G, by which the valves are actuated. Screwedinto the top of the hollow plunger is the hollow piston-rod H, the lowerend of which communicates directly with the hollow plunger, and-itsupper end is open and has secured to it the yoke I of the connecting-rodor pitman, by which the piston and plunger are operated.

J is a pipe screwed into the top of the cylinder. The hollow piston H isfitted snugly within the pipe J.

j are annular grooves forming water-packing. These are made between thehollow piston-rod H and the pipe J and between the plunger D and thecylinder A.

The operation of the device is as follows: Upon the downstroke of theplunger and pistonthe valve B at the bottom of the cylinder closes,while the valve B at its top opens. The valve E in the plunger opens andthe valve E closes. This action forces the water in the cylinder belowthe plunger through the ports (2 into the hollow plunger and up throughthe hollow piston. Upon the upstroke the valve B at the top of thecylinder closes, while the valveB at its bottom opens. The valve E inthe plunger opens, while its valve E closes.

upon both the down and the up stroke, while at the same time I amenabled to make the cylinder with a small diameter, as is required forfitting in the well, and still have the pump of a capacity muchincreased above a singleacting pump. v

I am aware of Patents No. 32,048, April 16, 1861, N 0. 211,168, January7, 1879, and No. 139,650, June 10, 1873, and therefore lay no claim tothe constructions therein shown and described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a submerged pump, the combination, with a cylinder havingvalve-ports and valverings B B, of the hollow plunger D, havingoppositely-located ports (1 d in each end, the

the spindles or bolts F and the springs G,

lrings,.-springs'i"or actuating said rings, and I0 I apistourod, H, allconstructed and arranged to operate as herein set forth.

In witness whereof I have hereunto set my hand. I

CHARLES HENRY FOSTER .Vitnesses: I

S. H. NOURsE, H. 0. LEE.

